Abstract:
A method for growing a SiC-containing film on a Si substrate is disclosed. The SiC-containing film can be formed on a Si substrate by, for example, plasma sputtering, chemical vapor deposition, or atomic layer deposition. The thus-grown SiC-containing film provides an alternative to expensive SiC wafers for growing semiconductor crystals.
Abstract:
A crystal growth process comprising providing a reactor having a crucible with an injector apparatus and a seed holder. The injector apparatus has an inner gas conduit and an outer gas conduit wherein an inert gas is introduced into the outer conduit. The injector apparatus has an upper injector and a lower injector and a gap therebetween. The upper injector temperature is maintained at a higher temperature than the lower injector.
Abstract:
A method for producing a thin film promoter layer is disclosed. The method includes depositing a Group IV semiconductor ink on a substrate, the Group IV semiconductor ink including a set of Group IV semiconductor nanoparticles and a set of metal nanoparticles to form a porous compact. The method also includes heating the substrate to a first temperature between about 350°C to about 765°C and for a first time period between 5 min to about 3 hours.
Abstract:
Methods for formation of epitaxial layers containing silicon are disclosed. Specific embodiments pertain to the formation and treatment of epitaxial layers in semiconductor devices, for example, Metal Oxide Semiconductor Field Effect Transistor (MOSFET) devices. In specific embodiments, the formation of the epitaxial layer involves exposing a substrate in a process chamber to deposition gases including two or more silicon source such as silane and a higher order silane. Embodiments include flowing dopant source such as a phosphorus dopant, during formation of the epitaxial layer, and continuing the deposition with the silicon source gas without the phosphorus dopant.
Abstract:
A method of forming a densified nanoparticle thin film in a chamber is disclosed. The method includes positioning a substrate in the chamber; and depositing a nanoparticle ink, the nanoparticle ink including a set of Group IV semiconductor particles and a solvent. The method also includes heating the nanoparticle ink to a first temperature between about 30°C and about 300°C, and for a first time period between about 1 minute and about 60 minutes, wherein the solvent is substantially removed, and a porous compact is formed. The method further includes exposing the porous compact to an HF vapor for a second time period of between about 2 minutes and about 20 minutes, and heating the porous compact for a second temperature of between about 25°C and about 60° C; and heating the porous compact to a third temperature between about 100° C and about 1000° C, and for a third time period of between about 5 minutes and about 10 hours; wherein the densified nanoparticle thin film is formed.
Abstract:
This invention relates to a method for depositing silicon carbide material onto a substrate such that the resulting substrate has a carrier lifetime of 0.5 -1000 microseconds, the method comprising a. introducing a gas mixture comprising a chlorosilane gas, a carbon- containing gas, and hydrogen gas into a reaction chamber containing a substrate; and b. heating the substrate to a temperature of greater than 1000 °C but less than 2000 °C; with the proviso that the pressure within the reaction chamber is maintained in the range of 0.1 to 760 torr. This invention also relates to a method for depositing silicon carbide material onto a substrate such that the resulting substrate has a carrier lifetime of 0.5 -1000 microseconds, the method comprising a. introducing a gas mixture comprising a non-chlorinated silicon- containing gas, hydrogen chloride, a carbon-containing gas, and hydrogen gas into a reaction chamber containing a substrate; and b. heating the substrate to a temperature of greater than 1000 °C but less than 2000 °C; with the proviso that the pressure within the reaction chamber is maintained in the range of 0.1 to 760 torr.
Abstract:
A method for depositing a carbon doped epitaxial semiconductor layer (30) comprises maintaining a pressure of greater than about 700 torr in a process chamber (122) housing a patterned substrate (10) having exposed single crystal material (20). The method further comprises providing a flow of a silicon source gas to the process chamber (122). The silicon source gas comprises dichlorosilane. The method further comprises providing a flow of a carbon precursor (132) to the process chamber (122). The method further comprises selectively depositing the carbon doped epitaxial semiconductor layer (30) on the exposed single crystal material (20).
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Siliziumsubstrats (1), umfassend die Schritte Bereitstellen eines Siliziumsubstrats mit einer im Wesentlichen ebenen Siliziumoberfläche, Herstellen einer porösen Siliziumoberfläche mit einer Vielzahl von Poren (2), insbesondere mit Makroporen und/oder Mesoporen und/oder Nanoporen, Aufbringen eines in das Silizium einzubringenden Füllmaterials, welches einen Durchmesser aufweist, der kleiner als ein Durchmesser der Poren (2) ist, Einbringen des Füllmaterials (3) in die Poren (2), gegebenenfalls Entfernen von überflüssigem Füllmaterial (3) von der Siliziumoberfläche, und Tempern des mit dem in die Poren (2) eingefüllten Füllmaterials (3) versehenen Siliziumsubstrats (1) bei einer Temperatur zwischen ca. 1000°C bis ca. 1400°C, um die erzeugten Poren (2) wieder zu schließen und das Füllmaterial (3) einzuschließen.
Abstract:
Chloropolysilanes are utilized in methods and systems for selectively depositing thin films useful for the fabrication of various devices such as microelectronic and/or microelectromechanical systems (MEMS).
Abstract:
A method for forming an ultra shallow junction on a substrate is provided. In certain embodiments a method of forming an ultra shallow junction on a substrate is provided. The substrate is placed into a process chamber. A silicon carbon layer is deposited on the substrate. The silicon carbon layer is exposed to a dopant. The substrate is heated to a temperature greater than 950°C so as to cause substantial annealing of the dopant within the silicon carbon layer. In certain embodiments the substrate is heated to a temperature between about 1000°C and about 1100°. In certain embodiments the substrate is heated to a temperature between about 1030°C and 1050°C. In certain embodiments, a structure having an abrupt p-n junction is provided.